21580140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{21157}}^1$

素因数の和:21186

約数の個数: 48

約数和(自身を含む): 63981792

約数和(自身を除く): 42401652

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 21157, 42314, 63471, 84628, 105785, 126942, 211570, 253884, 317355, 359669, 423140, 634710, 719338, 1079007, 1269420, 1438676, 1798345, 2158014, 3596690, 4316028, 5395035, 7193380, 10790070, 21580140]

約数ペア:

[(1, 21580140), (2, 10790070), (3, 7193380), (4, 5395035), (5, 4316028), (6, 3596690), (10, 2158014), (12, 1798345), (15, 1438676), (17, 1269420), (20, 1079007), (30, 719338), (34, 634710), (51, 423140), (60, 359669), (68, 317355), (85, 253884), (102, 211570), (170, 126942), (204, 105785), (255, 84628), (340, 63471), (510, 42314), (1020, 21157)]